Flowmaster Hushpower HP2
Thread Starter
Racer
Joined: Aug 2011
Posts: 429
Likes: 24
From: Charlotte NC
Flowmaster Hushpower HP2
Hi I've been using the HP2 for years now and getting a bit tired of the drone as it creates a rattling effect. I am considering switching to glass packs which I think is a step quieter and without so much drone. The BB is a deeper sounding engine and even with regular Midas mufflers and headers it can be throaty without drones. Is a glass pack essentially what I have now?
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
dont know if those have any packing at all. not crazy about those in general. as a kid in the 80s maybe
Need a larger case to quiet things down...the straight through types are going to be loud.
Need a larger case to quiet things down...the straight through types are going to be loud.
Instructor
Joined: Feb 2013
Posts: 228
Likes: 67
From: Kennewick WA
Biggest mistake I ever did on previous 74 big block Vette was putting glass pack mufflers in the stock location! What a constant drone they made in the cab. It was only after we went grocery shopping in the Vette and put the bags in the rear that I realized how loud the glass packs were. I couldn't believe how quite it got with just those paper bags back there.
Thread Starter
Racer
Joined: Aug 2011
Posts: 429
Likes: 24
From: Charlotte NC
Yes they have some fiber meshing that deadens the sound much more than straight pipe. I'm just getting tired of the drone sound when it locks on to a frequency and makes a humm that resonates until you go faster or slower. I don' mind loud though.
Thread Starter
Racer
Joined: Aug 2011
Posts: 429
Likes: 24
From: Charlotte NC
Biggest mistake I ever did on previous 74 big block Vette was putting glass pack mufflers in the stock location! What a constant drone they made in the cab. It was only after we went grocery shopping in the Vette and put the bags in the rear that I realized how loud the glass packs were. I couldn't believe how quite it got with just those paper bags back there.
Drifting
Joined: Jun 2015
Posts: 1,345
Likes: 753
From: Doctors Inlet Florida
I know Flowmasters are no longer in "Vogue" now but I had the three chamber Flowmasters on my car before I installed side pipes and they had a nice deep tone with no drone. I gave them to my Father in Law and they sounded great on his 383 1970 Charger as well.
